Padlock



H. WILLIAMS June 25, 1929.

PADLOCK Filed March 26, 1928 Patented June 25, 1929.

UNITED STATES lJltJZB PATENT OFFICE.

HARRY WILLIAMS, F DETROIT, MICHIGAN.

PADLOCK.

`Application filed March 26,

concealed in the barrel oi the lock Where f they `are secured by a transverselymovable bolt actuated through the operation oit' a key. 1lilith the foregoing and other obllects in view which will appear as the description Figure l is a side elevationojl' the lockivith the'ends of the locking shackle concealed .Within the barrel of the ,device as when locked. y'

Figure 2 is a longitudinal sectionalrview through the lock- With parts broken avvay i and the shackle in locked position.

showing the cap `covering.the keyfoi'iening released, and the shackle in uuloclced posi .l

tion.

Figure 4t is longitudinal sectional view showing the shackle unlocked and the cap covering the end oil the barrel in` open position. f

Figure 5 is a fragmentary perspective view` a stop pin liinitingits Withdrawal inoven'ient, also the slotted guise bushing, rigidly secured Vin the barrel ot the lock.

l? i gure. 6 is a cross-sectional view taken on or about line G-G of Figure 4, showing the bayonet. groove in the central plug of the lock barrel tor locking the. longitudinally mov-` able bolt upon ei'igaging the legs oit the shackle;

Figure 7 is a cross-sectional View taken on i or about line 7 7 ot Figure 4, showing the-` vertically slotted bushing through which the 192s. serial Nase/1,730.

stop pin carried by the long leg of the shackle slides.

`Referring noW to the letters of reference placed upon the drawings: A denotes a lock barrel litted at one end With a cap B rigidly secured to the barrel. C indicates a bushing secured by a driving fit in the end of thevlock barrel, having a central opening G1 to receive one lend oi a longitudinally movable bolt D, provided `at its opposite end With a plunger Daf-formed With` an annular rim d integral therewith.

E denotes ashackle, one leg of whichis longer `than the other, and extends transversely through the Wall of the lock barrel,-

and also through a transverse opening C2 in l the bushing (l. y j

Projectingi'roin the long leg of the shackle E is a short pin e adapted to bear against the Wall oit the lock barrel to preclude the removal `of vthe shackle. To accommodate the pin c, the bushing C is provided with a transverse slot C3 and is also counterbored at C4' that the pin e on the long leg oi the shackle may not interfere with `the shackle upon being unlocked, or `ot 'rota-ting the shackle when 1n unlocked condition-see Figures l and 5.

The short leg of the shackle is provided With a groove El to receive the annular flange d et the plunger D2L carried by the bolt l),-- see Figure 2,-and is also recessed-see at its lower end toist-raddle the bolt D when locked.` .The boltD `has a flange all with a l spring F coiled on. the bolt bearing against Figure 8 is an end elevation oit the lock the flange all at one end and at the other end against the bushing C.

G is alock cylinder ot the usual type of construction, located at the closed end ot the lock barrel. Il is a longitudinally movable and rotatable plug extending through a central opening in the end Wall ol thelock barrel having the usual narrow slot H1 to receive y 'the key employed in this type ot lock.

showing the longer end of the shackle With H2 is an angular shaped peripheral groove the projecting end ot a pinGl, mounted in the Wall ot the lock cylinder'.

I denotes a cap litted With a telt or rubber lining I1 adapted to cover the end of the lock barrel to guard against moisture or dirt entering the key slot. Secured to the wall ot the cap I is an inwardly projecting pin J eX- tending int-o an opening A1 bored in the Wall ot the lock barrel. i

Sleeved. upon the pin J is a spring K adapted to bear at one end against the Wall of the lock barrel and at the other against a head or nut J a on the end of the pin, the object being to yieldingly permit the withdrawal ofthe cap I from the end of the barrel against the tension of the spring and that it may be turned to the side to gain access to the lock for the insertion of the key-see Figure 3.

Having now indicated the several parts by reference letters, the construction and operationof the device will be readily understood.

In describing the operation of the device, it will be assumed that the bolt is in the unlocked position indicated in Figure 4 of the drawings, the short leg ofr the shackle E being withdrawn from the lock barrel and free to swing as indicated in Figure 3.

To lock the device the short legy of the shackle is forced into the opening at the side of the lock barrel until the long le(Y strikes the lower wall of the lock barrel, the short leg at the same time contacting with the bolt D,-limiting its further movement. The key is then inserted in the opening provided in the center plug of the lock barrel and the plug .thereby crowded back against the plunger D, forcing the latters peripheral flange into the slot E1 in the short leg of the shackle and against' the outward thrust of the spring F coiled upon the bolt.

When the center plug is forced back so that its outer face is Hush with the outer wall of the lock barrel, the pin G1 in the lock cylinder will be at the end of the longitudinal portion of the right'angle slot H2, in the center plug. The plug is then rotated by the key so that the pin G? may enter the transverse portion of thexslot as clearly indicated in Figure Q-thus locking the plug against outward movement occasioned by thethrust of the spring F carried by the bolt. This operation results in maintaining the peripheral flange dof the plunger Da in the groove E1 of the shackle, which it has now entered-the end of the bolt D simultaneously entering the opening Ea in the long leg of the shackle,

thereby locking the shackle in closed position.

Thefcap I is then rotated from the position shown in Figure 4, that it may iit over the end of the lock barrel, as shown in Figure 2, the action of the spring K serving to retain the'cap on the end of the barrel against accidental release ordislodgement, thereby providing a water-tight seal covering the key the bolt D from engagement with the legs of the shackle and unlocking the device, as indicated in Figure 4.

Having thus described my invention what I claim is:

l. In a device of the character described, a lock barrel; a longitudinally slidable bolt fitted at one end with a plunger having an annular flange; a bushing secured to the lock barrel having a central bore to receive the eml of the bolt; a transversely disposed shackle having one leg relatively longer than the other, each leg having a recess respectively adapted to receive the end of the bolt and the flange of its plunger; resilient means adapted to force the bolt of the plunger outwardly; a lock cylinder secured to the lock barrel; a rotatable and longitudinally movable ke plug concentrically mounted in the lock cy inder in longitudinal axial alignment with the plunger, whereby upon applying pressure to the key plug the bolt with its plunger may be pushed into locking engagement with the legs of the shackle against the outward thrust of the bolt and plunger; and means for maintaining the bolt and plunger in locked relation with the legs of the shackle.

2. In a device of the character described, a lock barrel; a longitudinally slid able holt littcd at one end with a plunger having an annular flange; a bushing secured to the lock barrel having a central bore to receive the end of the bolt and a transverse bore to receive the leg of a shackle; a shackle having one leg relatively longer than the other, the longer leg extending into the transverse bore of the bushing, each leg having a recess respectively adapted to receive the end of the bolt and the flange of its plunger; a stop pin projecting from the long leg of the shackle into a transverse slot provided in the bushing, adapted upon contacting with the wall of the lock barrel to arrest the withdrawal of the shackle from the lock barrel; resilient means adapted to force the bolt plunger outwardly; a lock cylinder secured in the lock barrel; a rotatable and longitudinally movable key plug concentrically mounted in the lock cylin` der in longitudinal axial alignment with the plunger, whereby upon applying pressure to the key plug the bolt with its plunger may be pushed into locking engagement with the legs of the shackle against the outward thrust of the bolt and plunger; and means for maintaining the bolt and plunger in locked relation with the legs of the shackle.

3.`In a device of the character desrribed, a lock barrel; a bolt fitted with a plunger "at y one end and longitudinally slida )le within the lock barrel; a bushing secured to the lock barrel with a central bore to receive the bolt; a shackle having one leg relatively longer than the other, each leg having a recess respectively to receive the endof the bolt and the ange of its plunger; resilient means adapted to force the bolt plunger outwardly; a lock cylinder secured in the lock barrel; a rotatable and longitudinally slidable key plug eoneentrieally mounted in the lock cylinder adapted to bear at its inner end upon the bolt plunger, said key plug provided With a peri phe 'el right angle groove; and a pin supported. in the Wall of the cylinder With a projeeting end extending into the right angle groove of the key plug, whereby upon inserting a key the plug may be forced longitudinally against the outward thrust ot the bolt and plunger that they nray respectively enter into locking engagement with the legs of the shackle, whereupon the plug may be rotated in the lock cylinder, Causing the pin to follow the transverse portion oit' the groove, to seeure the bolt n its interlocking relation with the shackle until released.

In testimony whereof, I sign this speeiiea- 20 ti on.

HARRY VILLIAMS. 

